#container {
	position: absolute;
	width: 100%;
	/* height: 100%; */
	background: pink;
}

#header {
	position: relative;
	width: 100%;
	height: 200px;
	top: 0;
	left: 0;
	background: green;
}

#main {
	position: relative;
	width: 100%;
	height: 600px;
	top: 20px;
	left: 0px;
	background: yellow;
}

#footer {
	position: relative;
	width: 100%;
	height: 100px;
	top: 30px;
	left: 0px;
	background: blue;
}